<template>
  <el-form ref="deptForm" :model="form" :rules="formRules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option v-for="item in list" :key="item.id" :value="item.username" :label="item.username" />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { getEmployeeSimple } from '@/api/employees.js'
import { addDepartments, getDepartmentDetail, updateDepartment } from '@/api/department.js'

export default {
  name: '',
  // 导入组件名
  components: {},
  // 父传子,接收变量名
  props: {
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    // 自定义校验规则
    const validCode = (rule, value, callback) => {
      // 验证用户输入的code是否已存在
      // console.log(this.originList)
      let existCodeList = this.originList.map(item => item.code)
      // console.log(existCodeList)
      // 如果是编辑的状态,将当前编辑的部门的编码从存在的数据中移除,然后再判断
      if (this.isEdit) {
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
        // console.log(existCodeList)
      }
      if (existCodeList.includes(value)) {
        // 存在
        callback(new Error(`该部门编码${value}已存在`))
      } else {
        // 不存在
        callback()
      }
    }
    const validName = (rule, value, callback) => {
      // 验证用户输入的子部门名称是否在当前同级部门中已存在
      let existNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      // 编辑状态 需要判断同级部门是否有相同名称的部门
      if (this.isEdit) {
        // 找到当前元素的pid
        const pid = this.originList.find(item => item.id === this.id).pid
        // 用pid去找同级部门
        const brothers = this.originList.filter(item => item.pid === pid)
        // 排除自己
        existNameList = brothers.filter(item => item.id !== this.id).map(item => item.name)
      }
      if (existNameList.includes(value)) {
        callback(new Error(`该部门名称${value}已存在`))
      } else {
        callback()
      }
    }
    // 这里存放数据
    return {
      form: {
        name: '',
        code: '',
        manager: '',
        introduce: ''
      },
      formRules: {
        name: [
          { required: true, message: '部门名称不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '内容应该在1-50个字之间', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '部门编码不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '内容应该在1-50个字之间', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '部门负责人不能为空', trigger: 'change' }
        ],
        introduce: [
          { required: true, message: '部门介绍不能为空', trigger: 'blur' },
          { min: 1, max: 300, message: '内容应该在1-300个字之间', trigger: 'blur' }
        ]
      },
      list: []
    }
  },
  // 计算属性 类似于 data 概念
  computed: {},
  // 监听器 监控 data 中的数据变化
  watch: {
    // 'id': function(newVal, oldVal) {
    //   // console.log()
    //   this.loadDepartmentDetail()
    // }
  },
  created() {
    this.loadEmployeeSimple()
    if (this.isEdit) {
      this.loadDepartmentDetail()
    }
  },
  // 方法集合
  methods: {
    // 重置表单
    resetForm() {
      this.$refs.deptForm.resetFields()
    },
    hSubmit() {
      // 兜底校验
      this.$refs.deptForm.validate((valid) => {
        if (!valid) return
        // 发送请求
        // 通过 isEdit判断状态
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    hCancel() {
      // 关闭
      this.$emit('depClose')
    },
    // 新增部门
    async doAdd() {
      try {
        // 获取pid
        const res = await addDepartments({ pid: this.id, ...this.form })
        console.log(res)
        // 通知父组件关闭对话框
        this.$emit('success')
      } catch (e) {
        return new Error(e)
      }
    },
    // 编辑部门
    async doEdit() {
      try {
        const res = await updateDepartment(this.form)
        console.log(res)
        // 重新渲染并关闭
        this.$emit('success')
      } catch (e) {
        console.log(e)
      }
    },
    async loadEmployeeSimple() {
      try {
        const { data: res } = await getEmployeeSimple()
        console.log(res)
        this.list = res
      } catch (e) {
        return new Error(e)
      }
    },
    // 部门详情
    async loadDepartmentDetail() {
      try {
        const { data: res } = await getDepartmentDetail(this.id)
        console.log(res)
        this.form = res
      } catch (e) {
        console.log(e)
      }
    }
  }
}
</script>

<style scoped>
</style>
